Ok, so i have been seeing more and more on the subject popping up around here. I am no subject matter expert, but, however, I have successfully reflashed my ECU myself: so:
Tactrix is a cable that connects to your OBDII Port underneath the sterring wheel on your car. they are about 85 bux.
A couple of others, I'm at work, I'll try to link later.
drop in filter(not exactly a great addtion, but still in the equation none the less)
I put my car(06 rex) into diagnostics mode: two green cables under dash, connect them, start car and the CEL flashes. I hooked up the cable and plugged into my laptop(power supported by an inverter(the process can take a while, if you pull your ROM and lose power, bad shit could go down, better safe than sorry)). So, I pull up the ecuflash program...amazing to say the least, I mean, every sensor on the car was listed, down to what gear you are in, and the display was in real time, so, it updates every split second, I had previously downloaded the map for from another 06 owner with similar mods, it was a gamble to do, so I test flashed it first, therefore it did not burn to my ECU immediately. It took about five minutes to relogg, during the proccess, my car shuts off.....my heart sunk. Another few minutes and i start my car back up, it was a bitch to get started, I had to lay down full throttle, but I later learned that this can be due to it running in dianostics mode, so, leaving the car in diagnostics mode, I take it for a test run. Bam, new car. It made an incredible difference, it has more boost in first and second gear( before it would top out in those gears around 8-10 lbs, now it will spool to 13-14), and in all other gears(3,4,5th) i reach almost 16 lbs at around 6500 revs. So, I flashed the map to my ECU permanently, ensured that I had stored the stock ROM in numerous places(friends computers, couple of gig sticks). And now I am delighted to outrun the new mustangs in stop light hero battles. So, however riske' one may feel that this method of tuning is. I feel that it will on be as dangerous as you make it. I researched for a few weeks and talked to others online on this site and the software sites, and felt confident enought o try it. It worked, after two weeks of running this setup, I have datalogged a couple of times, and nothing has gone awry. So, everyone to their own opinion, but with a little effort and 85 dollars, I have engine management.
Wow, it can turn well too?